structuraltools.dk

📜 Historical scan 2026-08-20 00:34:58 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

structuraltools.dk is a .dk domain served by 2 nameservers (colin.ns.cloudflare.com, laura.ns.cloudflare.com). It was registered on 3 February 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.13.244 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by structuraltools-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 251ms

Nameserver	IP addresses	PTR	ASN / ISP
colin.ns.cloudflare.com	108.162.195.75 162.159.44.75 172.64.35.75 2606:4700:58::a29f:2c4b 2803:f800:50::6ca2:c34b 2a06:98c1:50::ac40:234b	colin.ns.cloudflare.com colin.ns.cloudflare.com colin.ns.cloudflare.com colin.ns.cloudflare.com colin.ns.cloudflare.com colin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
laura.ns.cloudflare.com	108.162.192.183 172.64.32.183 173.245.58.183 2606:4700:50::adf5:3ab7 2803:f800:50::6ca2:c0b7 2a06:98c1:50::ac40:20b7	laura.ns.cloudflare.com laura.ns.cloudflare.com laura.ns.cloudflare.com laura.ns.cloudflare.com laura.ns.cloudflare.com laura.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 236ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.13.244	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.133.137	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 272ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	structuraltools-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca09::4 2a01:111:f403:ca09::d 2a01:111:f403:ca09::e 52.101.68.21 52.101.68.39 52.101.73.153 52.101.73.8	mail-db4pr02cu00204.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-am0pr04cu00500.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	104.21.13.244

🔷 AAAA Records (IPv6)#

2 records 279ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:df4	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:8589	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 269ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.13.244,172.67.133.137 ech=AEX+DQBBCwAgACBoocGDHpSy1Wk646dQgSDb6caPtXukGz3aH7eIeyomZQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:df4,2606:4700:3037::ac43:8589

📝 TXT Records#

5 records 923ms

TXT Record
apple-domain-verification=TrXWijqil8bx9SrF
google-site-verification=1j18rrkFVv4Fp7a4zAOLNiyUq4BOR9s87Q49-2OVfLU
google-site-verification=LyEx4o0flB3ynqiL0dn1FxG9XVuYxj0JaFv4giDYANM
MS=ms27838721
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (structuraltools.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.structuraltools.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:a6b7045f035f4353902cb4b5ebf3fa77@dmarc-reports.cloudflare.net;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-18 04:52:53

www	104.21.13.244 172.67.133.137 2606:4700:3032::6815:df4 2606:4700:3037::ac43:8589 (AS13335) (address records, no CNAME)
www vs bare domain	Same network structuraltools.dk: 104.21.13.244 172.67.133.137 2606:4700:3032::6815:df4 2606:4700:3037::ac43:8589 (AS13335) www.structuraltools.dk: 104.21.13.244 172.67.133.137 2606:4700:3032::6815:df4 2606:4700:3037::ac43:8589 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.structuraltools.dk	9bYS2lYCbaQFWt0xN3VdcYBQ4dbre5RNW1w1j-4pmRE
TXT	_acme-challenge.structuraltools.dk	q_GIwHbLKC9XzvP5pKbRlUZn7cdBQDNGnh8mF1dp6xM

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

572ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2412589185
Primary NS (MNAME)	colin.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-16 08:09:19

Field	Value
Registrar	ONE.COM A/S
Registered	2024-02-03
Expires	2027-02-02 (107d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

251ms

236ms

272ms

AAAA

279ms

TXT

923ms

CAA

283ms

HTTPS

269ms

TLSA

768ms

SOA

0ms

MTA-STS

475ms

DNSSEC

572ms

SRV

319ms

Total

9512ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-18 04:52:53	1539ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 12:02:23	1140ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-24 11:15:43	1599ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-03 11:11:30	1712ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-28 06:20:40	1393ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-28 02:56:34	949ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-25 23:10:40	9893ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-21 00:36:45	12612ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-20 00:34:58 shown	9512ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-26 19:29:46	2093ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 17:24:18	966ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 06:03:58	1753ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 21:35:51	1837ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 13:54:44	2658ms	2 NS 2 A 1 MX	🔓 Insecure